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홍준표(Joonpyo Hong),이준식(Joonsik Lee),이기범(Kibum Lee),김준동(Joondong Kim) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.10
EMI (Electromagnetic Interference) has been a big issue regarding device stability. As health problems caused by Electromagnetic waves (EMW) have recently emerged due to the increase in use of electronic devices, a transparent EMI Shielding interface with ensured visibility is required. Herein, ITO/Ag/ITO hybrid structure EMI Shielding film with optical transparency and electrical conductivity has been developed. It showed a high optical transmittance (43%) and a high electrical conductivity (30000 S/m). As a result ITO/Ag/ITO film gives up to 40 ㏈ of EMI SE (Shielding Effectiveness) which is over 20 ㏈, a commercially applicable specification. This transparent EMI-shielding film can invisibly endow the protection from the human electronics and interfaces, such as cell phones, displays, vehicles and residential buildings.
A novel pre-processing technique for improving image quality in digital breast tomosynthesis
Kim, Hyeongseok,Lee, Taewon,Hong, Joonpyo,Sabir, Sohail,Lee, Jung-Ryun,Choi, Young Wook,Kim, Hak Hee,Chae, Eun Young,Cho, Seungryong Wiley (John WileySons) 2017 Medical physics Vol.44 No.2
<P>Conclusions: In this work, we report a novel pre-processing technique that improves detectability of lesions in DBT and has potential advantages over the global threshold-based post-reconstruction processing technique. The proposed method not only increased the lesion detectability but also reduced typical image artifacts pronounced in conventional FBP-based DBT. (C) 2016 American Association of Physicists in Medicine</P>
Design and Implementation of Math-Solving Robot
Youngchul Park,Hyungseok Lee,Joonpyo Hong,Joonsung Lee,Taesan Min,Hyeun Jeong Min,Hyo-Sang Lim,Hyoungsoon Kim 제어로봇시스템학회 2016 제어로봇시스템학회 국제학술대회 논문집 Vol.2016 No.10
This paper presents the design of a math-solving robot which has many potential applications in service, entertainment, and educational robotics. We design a robot scanning and recognizing a printed math problem on a paper and then writing an answer on it. We specifically attempt to solve magic square puzzles and compute simple calculation. Controlling motors and recognizing targets from low-cost sensors are very challenging; however, we address the design of our robot to generate stable and effective motions, built with a Lego Mindstorms EV3 in addition to robust sensing ability through its color sensor in our software design. We also present a linear system method and rank analysis in order to decide if the given puzzle has a unique solution, more than one solution, or no solution. Through real robot experiments with quantitative and qualitative analysis regarding scanning, matching, and algorithm, we demonstrate our robot solves given magic square problems and simple calculations.